Open-closed sign



FIG. 1 is a top-front perspective view of an open-closed sign showing mynew design;

FIG. 2 is a front elevation view thereof;

FIG. 3 is a rear elevation view thereof;

FIG. 4 is a first side elevation view thereof;

FIG. 5 is a second side elevation view thereof;

FIG. 6 is a top plan view thereof; and,

FIG. 7 is a bottom plan view thereof.

The broken lines in the drawings depict portions of the open-closed signthat form no part of the claimed design.

CLAIM The ornamental design of an open-closed sign, as shown anddescribed.